The anterior pituitary is encased in the sella turcica and has adenohypophysis leading into it. The hormones of the anterior pituitary (FSH, LH, TSH, ACTH, GH, PRL) are transported via portal system, meaning that it is blood based.

This diagram shows how different hormones affect the development of a male or female starting with the beginning of puberty. Puberty is triggered by rising levels of GnRH. This stimulates the anterior lobe of the pituitary to produce FSH and LH. These hormones result in follicle development and the production of estrogen.

Pituitary hormones. Almost all of the pituitary hormones are secreted by the anterior (front) lobe of the pituitary gland, but two hormones, vasopressin and oxytocin, are produced in the posterior (rear) lobe. Pituitary gland hormones either act on other glands, stimulating them to produce hormones, or act directly on tissues and organs.

It's said that when the pineal gland is activated it becomes illuminated like a thousands suns. The sense of white light flowing within and without may be when the pineal gland is highly activated producing DMT type chemistry during the height of the peak.